E-Numbers & Additives

What is E171? Complete guide to understanding E171 (Titanium Dioxide) in your food The Quick Answer E171 is a synthetic white mineral pigment made from titanium dioxide containing nanoparticles. It's…

What is E541? Complete guide to understanding E541 (Sodium Aluminum Phosphate Acidic) — a severely restricted leavening agent with aluminum content concerns ⚠️ SEVERELY RESTRICTED IN EU - ALUMINUM CONCERNS:…

What is E302? Complete guide to understanding calcium ascorbate in your food The Quick Answer E302 is calcium ascorbate, a form of vitamin C used as an antioxidant and preservative…

What is E217? Complete guide to understanding E217 (Sodium Propyl p-Hydroxybenzoate/Sodium Propylparaben) in your food The Quick Answer E217 is sodium propyl p-hydroxybenzoate (sodium propylparaben), the water-soluble sodium salt version…

What is E542? Complete guide to understanding E542 (Edible Bone Phosphate) — an animal-derived mineral additive with significant dietary restriction implications 🦴 NOT VEGAN, NOT VEGETARIAN, AND POTENTIALLY NOT HALAL/KOSHER:…

What is E1521? Complete guide to understanding polyethylene glycol in your food The Quick Answer E1521 is polyethylene glycol (PEG), a polymer used primarily in food supplements and pharmaceutical capsules.…

What is E557? Complete guide to understanding E557 (Iron Oxide Red) — approved in EU but banned for food in USA, with incomplete safety assessment and major international regulatory divergence…

What is E237? Complete guide to understanding sodium formate in your food The Quick Answer E237 is sodium formate, a preservative derived from formic acid used primarily in animal feed…

What is E110? Complete guide to understanding E110 (Sunset Yellow FCF) in your food The Quick Answer E110 is a synthetic yellow-orange azo dye used to color foods bright orange-yellow.…

What is E252? Complete guide to understanding potassium nitrate in your food The Quick Answer E252 is potassium nitrate (KNO₃), a preservative commonly used in the food industry. It's used…